JPH01129986A - Cleaner for buffing - Google Patents

Abstract

PURPOSE:To produce a cleaner which removes abrasives for buffing sticking to metal parts, etc., without exerting unfavorable influence by using trichlorodifluoroethane as an effective component. CONSTITUTION:A cleaner for buffing contg. trichlorodifluoroethane as an effective component is prepd. and about 0-50wt.% at least one kind of compd. selected among hydrocarbons such as n-pentane, alcohols such as methanol, ketones such as acetone, chlorinated hydrocarbons such as methylene chloride and esters such as methyl acetate is optionally incorporated according to the purposes for which the cleaner is used. The cleaner removes abrasives for buffing sticking to metal parts, etc., buffed with the abrasives.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a buffing cleaning agent used to remove abrasives adhering to metal parts polished using a buffing agent.

[Prior Art] Abrasives are used in the buffing process of precision metal parts, decorative parts, etc., but in many cases, products cannot be produced if these remain attached. Therefore, in the finishing process of such parts, organic solvents are used for cleaning. As for the types of solvents, 1, 1.1) Lichloroethane is widely used.

[Problems to be solved by the invention] The present invention solves the problems conventionally used. ! - Since trichloroethane is undesirable from the standpoint of groundwater contamination, its usage should be reduced.

[Means for solving the problems] The present invention has been made to achieve the above-mentioned objects.
A buffing cleaning agent containing trichlorodifluoroethane as an active ingredient is provided.

Trichlorodifluoroethane, which is an active ingredient of the buffing cleaning agent of the present invention, is an excellent solvent that has advantages such as being nonflammable and having a suitable dissolving power. Trichlorodifluoroethane includes 1.1.2-1-dichloro-2,2-difluoroethane (hereinafter referred to as R (22), 1,2.21
-Rechloror 1.2-Difur Saigukotan (hereinafter R122
,ll) and 1,1.1-trichloro-2,2-
Three types of isomers of 1-difluoroethane (hereinafter referred to as RI22b) are known, and these can be used alone or as a mixture of two or more types.

The buffing cleaning agent of the present invention can contain various other components depending on various purposes. For example, in order to enhance the removal effect of the abrasive, at least one kind selected from organic solvents such as hydrocarbons, alcohols, ketones, chlorinated hydrocarbons, or esters can be included. The content ratio of these solvents in the buffing cleaning agent is 0 to 50% by weight. J%, preferably 10 to 40% by weight, more preferably 20 to 301ii%. If the mixture of trichlorodifluoroethane and the organic solvent has an azeotropic composition, it is preferred to use the azeotropic composition.

The hydrocarbons are preferably linear or cyclic saturated or unsaturated hydrocarbons having 1 to 15 carbon atoms, such as n-pentane, isopentane, n-hexane, isohexane, 2-methylpentane, 2,2-dimethylbutane, 2.3-dimethylbutane, n-hebutane, isohebutane, 3-methylhexane, 2.4-dimethylbentane, 1-octane, 2
-Methylhebutane, 3-methylhebutane, 4-methylpentane, 2.2-dimethylhexane, 2.5-dimethylhexane, 3.3-dimethylhexane, 2-methyl-3
-ethylpenkun, 3-methyl-3-ditylpenkun,
2,3.3-trimedelpentane, 2.3.4-trimethylpentane, 2.2.3-trimethylpentane,
Isooctane, nonane, 2.2.5-trimedelhexane, decane, dodencane, 1-pentene, 2-pentene, 1-hexene, 1-octene, 1-nonene, 1-decene, cyclopentane, methylcyclopentane, cyclohexane , methylcyclohexane, ethylcyclohexane, bicyclohexane, cyclohexene, a-pinene,
It is selected from dipentene, decalin, tetralin, amylene, amylnaphthalene, etc. More preferred are n-pentane, n-hexane, n-hebutane and the like.

The alcohols are preferably linear or cyclic saturated or unsaturated alcohols having 1 to 17 carbon atoms, such as methanol, ethanol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, 5ec-butyl alcohol, isobutyl alcohol, Lert-butyl alcohol.

Pentyl alcohol, 5ec-amyl alcohol, l-
Ethyl-1-propatol, 2-methyl-1-butanol, isopentyl alcohol, terL-pentyl alcohol, 3-methyl-2-butanol, neopentyl alcohol, 1-hexanol, 2-methyl-1-pentanol, 4 -Methyl-2-pentanol, 2-ethyl-1-butanol, 1-heptatool, 2-heptatool, 3-heptatool, 1-octanol, 2-octanol, 2-ethyl-1-hexanol, 1-nonanol , 3.5.5-trimethyl-1-hexanol, 1-
Decanol, I-undecanol, 1-dodecanol,
Allyl alcohol, propargyl alcohol, benzyl alcohol, cyclohexanol, 1-methylcyclohexanol, 2-methylcyclohexanol, 3-methylcyclohexanol, 4-methylcyclohexanol, a-terpineol, avinitinol, 2.6-dimethyl-4- The alcohol is selected from heptatool, trimethylnonyl alcohol, tetradecyl alcohol, heptadecyl alcohol, and the like. More preferably methanol,
Ethanol, isopropyl alcohol, etc.

Ketones include R-CO-R', R-CD, R-
CD-R'-rco HIIz ] CD-R'', R-CO-R', R-CO-R' (where R, R', R'' are saturated or unsaturated carbonized carbon atoms having 1 to 9 carbon atoms) Preferred are those represented by any of the following formulas: acetone, methyl butyl ketone, 2-pentanone,
3-pentanone, 2-hexanone, methyl-n-butyl ketone, methyl butyl ketone, 2-heptanone, 4-heptanone, diisobutyl ketone, acetonylacetone,
Methylpentane, E, Ron, Methyl-〇-amylketone, Ethylbutylketone, Methylhexylketone, Cyclohexanone, Methylcyclohexanone, Isoboron, 2
．． It is derived from 4-pentanedione, diacetone alcohol, acetophenone, fenchen, etc. More preferred are acetone, methyl ethyl ketone and the like.

The chlorinated hydrocarbons are preferably saturated or unsaturated chlorinated hydrocarbons having 1 to 2 carbon atoms, such as methylene chloride, carbon tetrachloride, 1.1-dichloroethane, 1.2-dichloroethane, I, 1. l trichloroethane, 1.1.2-
1-dichloroethane, I, l, 1.2-tetrachloroethane, 1,1,2.2-tetrachloroethane, pentachloroethane, 1.1-dichloroethylene, 1.2
- selected from dichloroethylene, trichlorethylene, tetrachlorethylene, etc. More preferred are methylene chloride, 1.1.1-1-rif-convex ruethane, trichlorethylene, tetrachlorethylene, and the like.

As the esters, those represented by the following general formula are preferable: R, -COO-R,, R+-a-Rs-Co
o-R4°OR.

C0OR.

(Here, R,, R,, R,, R,, R,, R, is a hydrocarbon group having 11 or 1 to 19 carbon atoms and a saturated or unsaturated bond.) Specifically, formic acid Methyl, ethyl formate, propyl formate,
Butyl formate, isobutyl formate, pentyl formate, methyl acetate, ethyl acetate, propyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate, 5ec-butyl acetate, pentyl acetate, isopentyl acetate, 3-methoxybutyl acetate, 5ec-hexyl acetate, 2 -Ethyl butyl acetate, 2-ethylhexyl acetate, cyclohexyl acetate, benzyl acetate, methyl propionate, ethyl propionate, butyl propionate, isopentyl propionate, methyl butyrate, ethyl butyrate, butyl butyrate, isopentyl butyrate, isobutyl isoacetate, 2- Hydroxy-2
- Ethyl methylpropionate, butyl stearate, pentyl stearate, methyl benzoate, edyl benzoate, propyl benzoate, butyl benzoate, isopentyl benzoate, benzyl benzoate, edyl abietate, benzyl abietate, adipic acid Bis-2-ethylhexyl, γ-butyrolact, diethyl oxalate, dibutyl oxalate, dipentyl oxalate, diethyl malonate,
Dimethyl maleate, diethyl maleate, dibutyl maleate, dibutyl tartrate, tributyl citrate, dibutyl sebacate, bis-2-ethylhexyl sebacate, dimethyl phthalate, diethyl phthalate, dibutyl phthalate, bis-2-ethylhexyl phthalate , dioctyl phthalate, etc. More preferred are methyl acetate, ethyl acetate and the like.

The buffing cleaning agent of the present invention may further contain various cleaning aids, water, surfactants, stabilizers, or hydrogen-containing chlorinated fluorinated hydrocarbons that have little effect on ozone destruction. As a cleaning method, conventional methods such as hand wiping, dipping, spraying, shaking, ultrasonic cleaning, and steam cleaning can be used.

[Examples] Additional Examples 1 to 8 An abrasive removal test was conducted using the buffing cleaning agents shown in Table 1 below.

Buffing agent for watch frames (GS-1, Soken Kogyo■
After polishing with a buff polishing agent (manufactured by J.D.), the specimen was immersed in a buffing cleaning agent, subjected to ultrasonic waves for 3 minutes, and then taken out to observe the removal of the polishing agent. The results are shown in Table 1.

Table 1 () shows the mixing ratio [wt%] 0: Good removal △: Small amount remaining It has an excellent removal effect and is also C0, which has been used conventionally.1. Compared to ll-lychloroethane, metal,
This is advantageous in that the abrasives made of plastics, elastomers, etc. have little adverse effect on the articles to be removed.

Claims (2)

[Claims] (1) A buffing cleaning agent containing trichlorodifluoroethane as an active ingredient. (2) The buff according to claim 1, wherein the buffing cleaning agent contains at least one selected from hydrocarbons, alcohols, ketones, chlorinated hydrocarbons, or esters. Abrasive cleaning agent.